Pair Annotation: Adaptation of Pair Programming to Corpus Annotation

This study examined the role of root morphological traits, particularly root hairs, in zinc (Zn) uptake and plant growth using wild-type barley (Pallas) and a root-hairless mutant (brb). In soil culture, Pallas exhibited greater shoot dry matter, Zn concentration, and Zn uptake compared to brb, especially under Zn deficiency, due to its larger root surface area from root hairs. Both genotypes developed longer roots under Zn deficiency, but root hair development was unaffected by Zn status. In solution culture, no significant differences were observed between the genotypes, suggesting that the brb mutation did not impact growth or Zn uptake. The study concluded that Pallas's superior growth and Zn uptake in Zn-deficient soil were primarily due to its root hairs, rather than other root morphological traits.